Oil burner



Patented Oct. 12, 1926.

UNITED} STATES? PATENT OFFICE...

CHARLES SEIFERT, OF KANSAS CI'IYQKANSAS, ASSIGNOR T0 L. KANSAS CITY, MISSOURI.

H. BORSERINE, or

OIL BURNER;

Application filed November 12,- 1923. Serial No. 674,384.

This invention relates to oil burners and my object is to produoe an improved type of burner in which the amount of air ad-' mitted to the mixing tube may be positive- ,ly regulated to secure a more perfectcombustible mixture.

Another. objectis to produce a burner-of strong, durable, efficient, compact and inexpensive construction.

and in order that it may be fully under stood, reference is to be had to the accompanying drawing, inwhichz Figure 1 is a side elevation of a burner embodying the invention.

Figure 2 is a section on the line II-II of Figure 1. i I

Figure 3 is acentral vertical section of the burner as shown in Figure 1.

Figure 4 is a section on the line IV-IV .of Figure 1.

characters identify corresponding parts in all of the figures, 1 represents a pan for receiving 011 used in priming or starting thecatching any.

. burner action and also for overflow of oil from the burner, should the flame be accidentally extinguished. The pan 1 is adapted tov rest on the grate. of the furnace, stove orthe like, and the entire grate is then sealed in order to prevent the entry of air into the fire box, except by means of a passageway hereinafter described. Projecting through an opening in the pan 1 near one of its ends and extending above and below the same, is a tubular shield 2, closed at its lower end as at 3, and formed at its upper end with an arcuate saddle 4, for the reception of a portion of the circumference of a hollow ring generator 5. Communicating with the generator and axially alined with and extending downwardly through the shield 2, is a fuel inlet pipe 6 projecting through an opening in the closure 3 and secured to one end of a fuel line pipe 7, which leads downwardly through the this connection, it is desirable to point.

A further object is to produce a burner,

it reaches the furnace grate and'exteriorly of the furnace to a suitable supply tank, not shown.

out. that the shield2 provides a dead air space and prevents direct impingement of the; burnerflameon the supply. pipe 6 and. thus avoids the formation of carbon-within said. pipe, which would eventually lead to aconstriction of the passageway and hinder; the proper operation of. the burner. V

Communicating with thezinner side of the, ring generator 5 and vertically abovethe pipe 6, is a short pipe section SincOmmuni cation at its lower end andactingas a sup-- port for a circular vaporizing chamber 9-;

formed at its lowermost portion with an offset 10 to which any liquid fuel whichflmay not be vaporized in the-generator, will natur-- ally gravitate. The face of the vaporizer: will be formed with a thickened orreinforced portion 11 against which the flameis adapted to be projected. In flame, said vaporizer is formed with a circular bafile plate 12 almost closing the cen: tral opening of the ring generator and directing the flame radially in all. directions In I order to spreadrthe;

against the wall of the firebox, not. shown. 7

The vaporizer 9-is braced againstmccidental movement under the force oftheflameby an;

7 .upwardly projecting finger 13, detachably' In the said drawing, where like reference;

secured to the shield 2, and pressing against the rear side of said vaporizer.

In communication with the offset portion, 10 of thevaporizer is. a. superheater. lain. the form of a coil, preferably of coppertubing and arranged in a decreasing spiral. manner. with its axis in aline-ment with the axis of thereinforcement 11. The opposite end of the superheater 1 1 communicates with I a valve casing, hereinafter referred to,

Adjustably secured by means. of" a set. screw 15 in: an opening formed in the pan 1,, isa vertical air inlettube 16 which will extend downwardly into the ash pit of the, furnace. The open lower endof the.,tube 16 is adapted to be regulated in size so as to control the amount of air entering the tube, by means of a. disk damper 17 pivoted to the lower end of the tube and operated by a handle 18 which it ill extend exteriorly of the furnace through the clinker door or other opening.

The upper end of the air tube is flattened as at 19 to form parallel side walls. One of said walls is formed with an opening for the reception of a needle valve casing 20, adjustably secured in position by means of a set screw 21, the needle valve stem being prolonged to form an operating handle 22 which will extend exteriorly of the furnace for the control of the fuel vapor, the end of the superheating coil 14 communicating with said needle valve chamber. To the opposite side wall of the flattened portion 19 is joined a tubular mixing tube 23 axially alined with the jet orifice of the needle valve and with the axis of the reinforcement 11, the extremity of said tube being received within the first or smaller convolutions of the superheater coil 14, as illustrated.

The overflow pan 1 is provided with a suitable overflow pipe 241 which will lead downwardly through the grate of the furnace to any suitable container. In operation, the valve 22 being closed, generation is started by burning a small quantity of oil in the pan 1, it being understood, of course, that the generator and its connection up to the needle valve will be full of fuel. As soon as a quantity of oil has been vaporized, the valve 22 is gradually opened and the escaping vapor after mixing with the air entering through tube 16 is ignited by the priming flame. As the rapidity of generation is gradually increased and the vapor pressure correspondingly increases, the size of the flame will also rapidly in crease. Normally the center of the flame will impinge directly on the reinforcement 11 and will be projected radially in all directions by the baffle plate 12 against the walls of the fire chamber.

It is desirable to point out that the flattened type of head 19 for the air tube has been found highly advantageous as it permits the current of air to entirely surround the jet of vapor and leads to a better combustible mixture. The distance the needle valve projects into the mixing tube may be regulated as found desirable, it being obvious that the jet of vaporized fuel will act as an injector and will automatically create a suction which will draw up through the tube 16 the required quantity of air. After the proper generating action has been developed, the combustion in the flame zone takes place with a clean, blue and intensely hot flame, and with correspondingly. intense heating effect.

From the above description it will be apparent that I have produced a burner of the character described which possesses all of the features of advantage set forth as desirable, and while I have described and claimed the preferred embodiment of the same, it is to be understood that I reserve the right to make all changes properly falling within the spirit and scope of the appended claims.

I claim:

1. In an oil burner, the combination with a ring generator, of a vaporizer coaxially arranged within said generator, a tube connecting said generator and vaporizer and supporting the latter, a vapor nozzle, a spiral superheating vapor tube connecting said vaporizer and nozzle, an air inlet tube receiving one end of said nozzle and having an opening in axial alineinent with the center of said vaporizer against which the'jetof combustible mixture is discharged, and a needle valve controlling the flow through said nozzle.

2. In an oil burner, the combination with an upright tubular shield, an arcuate saddle carried by the upper end of said shield, a ring generator received in and supported by said saddle, a liquid fuel connection communicating with said generator within said saddle and axially arranged within said shield, a vapor nozzle, an air inlet tube receiving one end of said nozzle and having an opening arranged to discharge the combustible mixture of air and vapor toward said generator, and a needle valve controlling the flow through said nozzle.

3. In an oil burner, the combination with an upright tubular shield, an arcuate saddle carried by the upper end of said shield, a ring generator received in and supported by said saddle, a liquid fuel connection communicating with said generator within said saddle and axially arranged within said shield, a vaporizer coaxially arranged within said ring generator, a tube connecting said generator and vaporizer and supporting the latter, a vapor nozzle, a spiral superheating vapor tube connecting said vaporizer and nozzle. and an air inlet tube receiving one end of said nozzle and having an opening in axial alin-ement with the center of said vaporizer against which the ct of combustible mixture is discharged.

In witness whereof I hereunto atlix my signature.

CHAS. SEIFERTv 

